从Bokeh开始
0.12.4，可以将图例放置在中央绘图区之外。这是用户指南中的简短示例：
import numpy as npfrom bokeh.models import Legendfrom bokeh.plotting import figure, show, output_filex = np.linspace(0, 4*np.pi, 100)y = np.sin(x)output_file("legend_labels.html")p = figure(toolbar_location="above")r0 = p.circle(x, y)r1 = p.line(x, y)r2 = p.line(x, 2*y, line_dash=[4, 4], line_color="orange", line_width=2)r3 = p.square(x, 3*y, fill_color=None, line_color="green")r4 = p.line(x, 3*y, line_color="green")legend = Legend(items=[ ("sin(x)", [r0, r1]), ("2*sin(x)", [r2]), ("3*sin(x)", [r3, r4])], location=(0, -30))p.add_layout(legend, 'right')show(p)要调整位置，变化
dx和
dy在
location=(dx, dy)。
